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PCM-R8

High-Cohesion Phase-Change Matrix for Ultra-Low Resistance Bare-Die Cooling
PCM-R8 uses a reinforced phase-change matrix that remains a solid, free-standing pad at room temperature and softens under operating temperature and mounting pressure to wet the interface. Compared with conventional phase-change pads, R8 retains higher cohesion and structural integrity after phase transition, helping controlled-BLT or non-ideal stack-ups reduce trapped air, interfacial resistance, over-melting, and pump-out risk.

Thermal Performance：8.5 W/m-K; thermal resistance 0.08 °C-cm²/W @ 10 psi and 0.04 °C-cm²/W @ 50 psi
Phase Change / BLT：approx. 45–70°C softening range with minimum BLT down to 22 µm
Material Type：filled non-silicone thermoplastic phase-change pad; solid at room temperature for die-cutting and automated placement
Core Advantage：high-cohesion phase-change structure resists excessive flow, reducing pump-out, dry-out, and long-term interface degradation.

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Detailed Introduction

Performance Positioning and Thermal Value
PCM-R8 is built around 8.5 W/m-K conductivity and 0.08 °C-cm²/W @ 10 psi low thermal resistance, with minimum BLT down to 22 µm for a thin and stable thermal interface under low mounting pressure. It is especially suited for modules where the final bond line is mechanically limited or where heat sources and cooling parts are not in perfect one-to-one contact, helping reduce interface resistance and improve cooling consistency during long operation.

At room temperature, the material remains a solid, free-standing pad for clean die-cutting, placement, and automated alignment. It then completes interface wet-out under heat and pressure during operation. This solid-handling and phase-change wet-out behavior supports clean processing, thin BLT control, controlled-gap assemblies, and low contamination risk as a reliable alternative to thermal grease and conventional phase-change pads.

High-Cohesion Phase-Change Structure
The reinforced phase-change matrix softens at approx. 45–70°C to wet microscopic surface voids and displace interfacial air while maintaining higher cohesion and material continuity. The material is less prone to excessive flow or separation after phase transition, reducing over-melting, pump-out, dry-out, and long-term interface degradation under high-power cycling.

Recommended Applications
PCM-R8 is suitable for AI training clusters, hyperscale data center processors, HPC bare-die CPUs/GPUs, notebook thermal modules, aerospace and avionics high-power electronics, automotive power modules, optoelectronics, and laser systems. Its material profile is especially valuable for designs requiring high thermal conductivity, low interfacial resistance, high cohesion, and long-term stability.